
Pub. 42004-338K
Rugged Analog Auto-Dial Telephones
Page 18 of 21
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Table 2. Available Accessories
Part No.
Accessories
227
-001
247
-001
257
-001
277
-001
277
-00
2
BH
277
-00
2
B
H
A
C
12565-009
Ring Relay Kit
12565-010
Ring Relay Kit
12573-001
Spring Door Kit
12576-117
Front Panel Replacement Kit
230-001
Pole Mounting Kit, Rugged Phone/RF
Callbox
231-001FS
Pole Mounting Kit for BH/FS Series
Telephones when installed in a No. 238-
003 Enclosure
231-002
Pole Mounting Kit for Model 247-001 and
for Model 277-001 when installed in a No.
238-001 Enclosure
232-001
Pole Mounting Kit (22x Series)
233-001
Security Screwdriver, Torx T-25 Tip
238-001
Surface-Mount Enclosure, Stainless Steel,
Standard
238-003
Surface-Mount Enclosure, Stainless Steel,
BH Telephones
Specifications
Electrical (Typical)
Auto-dialer ........................................ maximum 31 digits, with internal 12-button pad, field-programmable
Frequency response ............................................................................................................... 300 to 3,000 Hz
Inter-digit pause ................................................................................................................................... 100 ms
Minimum loop current ......................................................................................................................... 20 mA
Signaling tone (DTMF) ................................................................................................. 100 ms tone duration
Supervisory dc current ................................................................. minimum 20 mA dc; maximum 60 mA dc
Supervisory dc voltage ................................................................. 24 V dc to 60 V dc (not polarity sensitive)
Network interface ............................................................................................................................. loop start
Network signaling ................................................................................................................................ DTMF
Auxiliary output (isolated solid-state switch) .................................................................. 48 V dc @ 125 mA
28 V ac
RMS
@ 80 mA
RMS
Handset receiver volume gain .............................................................................. +18 dB in 3 dB increments
Environmental
Operating temperature ......................................................................... −40 ºF to +140 ºF (−40 ºC to +60 ºC)
Humidity ....................................................................................................................... 90% non-condensing